Description

Benzenesulfonic Acid, Hydroxy-, Polymer With Formaldehyde, Sodium Salt is a synthetic, water-soluble anionic polyelectrolyte derived from phenol-formaldehyde chemistry. This compound is valued for its excellent dispersing, sequestering, and scale-inhibiting properties in aqueous systems. It serves as a critical functional additive for industrial water treatment, construction materials, and textile processing, where control over mineral deposition and particle suspension is required.

Application

• Industrial Water Treatment: Acts as a highly effective dispersant and antiscalant in cooling water, boiler water, and reverse osmosis systems to control calcium carbonate, sulfate, and phosphate scales.
• Construction & Concrete: Used as a plasticizer and grinding aid in cement production, and as a superplasticizer in concrete admixtures to improve workability and reduce water content.
• Textile & Dyeing Auxiliary: Functions as a leveling agent and dispersant for dyes and pigments, ensuring uniform color distribution and preventing agglomeration.
• Paper & Pulp Industry: Employed as a dispersant for pigments like calcium carbonate and kaolin in paper coating formulations to enhance sheet quality and brightness.
• Oilfield Chemicals: Utilized in drilling muds and completion fluids as a thinner and dispersant to control rheology and prevent clay flocculation.
• Detergent & Cleaning Formulations: Serves as a builder and sequestrant to inactivate water hardness ions (Ca²⁺, Mg²⁺), enhancing the cleaning efficiency of soaps and detergents.
• Ceramics & Clay Processing: Acts as a deflocculant to reduce the viscosity of ceramic slips and improve casting performance.

Basic Information

Product Name	Benzenesulfonic Acid, Hydroxy-, Polymer With Formaldehyde, Sodium Salt
CAS No.	37307-94-1
Molecular Formula	(C7H7NaO4S·CH2O)n
Molecular Weight	Polymeric substance (Contact for details)
Synonyms	Sodium salt of sulfonated phenol formaldehyde condensate; Sulfonated phenol-formaldehyde resin, sodium salt; Phenolsulfonic acid-formaldehyde polymer sodium salt; SPF (Sulfonated Phenol Formaldehyde); Water treatment polymer dispersant; Lomar® PW (typical trade name); Dispersant SNF; Formaldehyde polymer with sodium (hydroxybenzenesulfonate)
EINECS	Contact for details

Quality Control

Our production of Benzenesulfonic Acid, Hydroxy-, Polymer With Formaldehyde, Sodium Salt adheres to stringent quality management protocols. Each batch undergoes rigorous testing for key parameters including active content, viscosity, pH, and sulfonation degree to ensure consistent performance. Certificates of Analysis (COA) documenting these specifications are provided with every shipment to guarantee supply reliability and product traceability for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after each use to prevent moisture absorption, which can affect flow properties and performance. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Brown to dark brown powder or granules
Active Content	≥ 90 %
pH (1% aqueous solution)	8.0 - 10.5
Moisture Content	≤ 8.0 %
Ash Content	≤ 20.0 %
Bulk Density	0.6 - 0.9 g/cm³
Solubility	Completely soluble in water

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.